Granted Patent
Utility
US 4,554,475 · App. 06/617,240
Field coil air vents for dynamoelectric machine
Inventor:
Hollis D. Sisk
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Jun 5, 1984
Inventor
Hollis D. Sisk
Assignee (at issue)
Mentzer Electronic GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.